uncrop.si

FREE · NO SIGNUP · NO UPLOAD

Compress an image

Less file weight, enough detail. Adjust dimensions and quality, then see the actual size of your download.

Your image

LOCAL PROCESSING
Canvas support is required.

Live preview

Try the demo

Choose your crop

Drag on the preview for a custom crop. The shaded edges will be removed.

×

PNG and WebP keep transparency.

THREE SMALL STEPS

How to compress an image.

  1. Choose an image and note its original file size.
  2. Select JPG or WebP, adjust quality, and reduce dimensions if needed.
  3. Download and compare the reported size with the upload.

Smaller files are a balance, not a promise.

Image compression trades file size against visual detail. JPG and WebP quality controls let you make that trade deliberately. A lower quality setting can make a photo smaller, but may create visible artefacts around text, gradients or sharp edges. Always inspect the result at the size where it will be used.

Dimensions matter too. A large photo destined for a small web card often benefits more from resizing than from aggressively lowering quality. Start with the longest-edge presets, keep the aspect ratio locked, and choose a quality level that still looks acceptable.

The tool reports the actual generated file size after export. A PNG, a small original file, or a high-quality conversion may produce a larger download. PNG is lossless and ignores the quality slider. There is no fixed percentage reduction or automatic target-size guarantee.

A FEW USEFUL DETAILS

Before you download.

Can I guarantee a file below a particular KB limit? +

No fixed size is guaranteed. Export, check the reported size, then lower quality or dimensions and try again.

Why is the quality control disabled for PNG? +

Canvas exports PNG losslessly. Quality applies to JPG and WebP.

Does this send my image to a compression service? +

No. The browser creates the compressed download locally.

ANOTHER WAY TO WORK

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